Circular-knitting machine.



W. T. BARRATT. CIRCULAR KNITTIRG MAOHINB.

urmonxon rum HAY 9. 1am.

Patented Sept. 12, 1911.

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W. T. BARRATT. cuzcsma mmm MACHINE.

APPLIGATIGB IILED KAY 9, 1007.

Patented Sept. 12, 1911.

' W. T. BARRATT.

CIRCULAR KNTTING MACHINE.

APPLLOATION rum nu s. 1901.

1,003,085. Patented sept. 12,1911.

14 SHEETS-SHEET 3.

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W. T. BARRATT.

CIRCULAR KNIIITING MACHINE. v ArPLxoyrIoH mman uur 9, 1901.

Patented Sept 12, 1911.

14 SHEETS-SHEET 4.

W. T. BARRATT.

. Patented Sept. 12, 1911.

14 SHEETS-SHEET 5.

W. T. ARRATT.

GIRGULAR KHITTING MACHINE. Y 1,003,085. APPLICATION FILED HAY 9, 19v07. Patented 12, 14 SHEETS-SHEET e.

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TFLIGATIGH FILED HAY 9. 1907. 1,008,085. Patented sept. 12,1911.

14 SHEETS-31.11* 7.

W. T. BARRATT.

CIRCULAR ENITTING MACHINE.

Patented Sept. 12, 1911.

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APPLICATI FILED MAY 8, 1907.

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- @afm '/l//ffv W. T. BARRAT'I' CIRCULAR KNITTING MACHINE.

l APPLICATION I'ILED HAY 9, 1907. 1,003,085 Patent-,ed sept. 12,1911.

14 SHEETS-SHEET l0.

, ,mf f mi? I 19o /Q II W. T. BARRATT.

CIRCULAR KNITTING MACHINE.

rrnxonlon nun un 9. 1907.

Patented Sept. 12, 1911.

14 SHEETS-SHEET 11,

Fig. 16.

W. T. BARRATT.

CIRCULAR KNTTING MACHINE.

APPLIOATION rxLnn MAY s, 1901.

Patented Sept. 12, 1911.

14 EERSTE-SHEET 12.

/ 'lf i 7113-5565.

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CIRCULAR KNITTING MACHINE. APPLIGATIOS ILB'n 11111119.1907.

14 SHEETSBHEET 13.

Fig. Zl 332 r331 .35

- W. T. BARRATT.

CIRCULAR KNHTINC- MACHINE.

Pulci-T1021 HLM) MAY 9,1907.

Patented Sept 12, 1911.

14 SHEETS-SHEET 14.

BLE COPY UNITED sTA'rEs PATENT ori-ron T. BARRATT, OF BENNINGTON, VERMONT, ASSIGNOB.. BY MESNE ASSIGN- MENTS, TO ANNIE COOPER, ALEXANDER J. COOPER, AND CHARLES S. KEHOE, VlOF BENNINGTON, VERMONT, EXECUTOBS 0F CHARLES COOPER, DECEASED.

CIBCULAB-KNITTING MACHINE.

Speeication or Letters Patent.

To all whom it may concern;

ABe it known that l, 'il-'ximian T. Barman", a citizen of the United States, residing at Bennington, in the county of Bennington and State of Vermont., have invented new and useful Improvements in Circular-Knitting Machines, of which the following is a specification.

This invention relates to improvements in knitting machines, being particularly adapted, although not confined, to use in connection with circular knitting machines and further to that class of knitting machines in which two cylinders are employedfor knitting rib work, the same being preferably used in connection with two conical needle cylinders employing spring needles to produce a rib fabric. y

My invention is also adapted to be used in connection with two cylinders in that class of circular knitting machines known as a rib top machine, which is a knitting machine adapted to knit the regular or rib fabric and is also provided with attachments whereby a welt may be knit, said welt serving as a tinish on the ends of cutis, drawer bottoms, bottoms of shirts, tops of socks and the like. Said rib top machine is further adapted to knit a royal rib and a loose or slack course in the fabric wherever it may be desired.

The invention consists in certain improvements pertaining to a sinker wheel, z'. e., to a rotary wheel provided with sinkers which are adapted to be moved in and out between the needles of the primary sst of needlesthat is, between those needles to which the yarn is first fed.

I have illustrated and described my invention, in so far as it pertains to a sinker wheel as employing sliding sinkers in connection with a needle cylinder, but I do not wish to be understood as limitin my invention to a sinker wheel with sli ing sinkers, as the same may be adapted for use with pivoted sinkers without departing from the spirit of my invention.

It will be seen that my improved sinker wheel may vhe used in connection with a single cylinder machine or a two cylinder machine and also it will be understood that said sinkcr wheel may be used in connection with a straight, or flat machine without departing from the spirit of my invention, as

hereinafter described and particularly set forth and pointed out in the claims.

In so far as the sinker Wheel in itself is concerned, the same has been disclosed and set forth in U. S. Letters Patent No. 864,354, issued to me August 27, 1907, but in the present application certain improvements and additions to the invention set forth in said application for Letters Patent are disclosed, whereby my improved sinker wheel in combination with one or two cylinders is rendered capable of being used in machines of the character set forth, viz., in rib top machines, and, moreover, said sinker wheel is so constructed and mounted upon a pivoted or rocking frame that in case of any imperfections in the yarn or in the needles or m the sinkers which would tend to cause a bunching or loading up, or in case the sinker wheel in its bearings or the sinkers themselves were not properly oiled and failed to move freely, and possibly lead to the breaking of said sinkers and needles, the sinker wheel will be immediately thrown out so that the sinkers will be disengaged from the needles and held out of engagement therewith and at the same. time the presser for the primary set of needles will he thrown out of connection with said needles, so that the loops of yarn cannot. be cast off of said needles, thus avoiding any possibility of breakage of either needles or sinkcrs or other parts of the machine which might result through various causes, some of which have been hereinbefore enumerated, by the failure of the sinker wheel to rotate.

The invention, then, primarily consists in a knitting machine having in combination a needle carrier and a rotary sinker wheel, the rotary sinker wheel being mounted upon a movable su ,port and acting as a detector for banche yarn, bent needles, bent sinkers, or any imperfection which interferes with the free rotation of said sinker wheel. Said sinlrer wheel, when its free rotation is interfered with, causes its support to he moved, so that the blades of said sinker wheel are moved out of engagement, with the needles of said knitting machine and the presser for the primary needles thrown out of connection with said needles.

The invention further consists in providing means to move the sinker wheel and its support away from the needle carrier other Patented Sept. 12, 1911.

than the intermeshing of the sinkers with thc needles.

The invention further consists in mounting thev rotatable sinlter wheel upon a rotatable support and in fastening to said sinken' wheel agear which meshes with the needles, .said needles preferably supported on opposite sides of the teeth of said gear, the Sinkel' wheel being resiliently hel(AA in opei'..-ive engagement with the needles until such time asior any reason the sinlter wheel is prevented from rotating freely, whereupon the gear meshing with the needles and not ro` tating about its axial center is moved with said support by the rotation of the needle carrier, and the sinker wheel is moved out of engagement with the needles.

The invention further consists in the means whereby the slur cock of the sinker wheel is automatically actuated to increase or diminish the distance to which the sinkers may be moved between the needles of the primary set of said needles, so that loops of different lengths may be fed to the primary needles; for instance, a. short loop can be fed to the primary needles when a lain stitch or welt is being knit; a longer oop can be fed to the needles when a one-and-one or rib fabric is being knit; and a longer loop still can be fed to the needles when a slack or loose course is to be knit thereon.

The invention 4finally consists in the combination and arrangement of parts set forth in the following specification and particularly pointed out, in the claims thereof.

Referring to the drawings: Figure 1 is a front elevation of a rib top knitting machine embodying my invention, the lower portion of the frame being broken away and the upper portion of the frame which supports the cloth tension instrumentalities being also brokenaway. Fig. 2 is a lan view ef the same, the side standards o the frame being shown in section on line A--A of Fig. 1. Fig. 3 is a sectional elevation, taken on line C-C, Fig. 2, illustrating the sinker wheel and the series of levers by which the. slur cock in said sinlrer wheel is operated, also showing a portion of the needle cylinders in connection therewith. Fig. l is a plan view, partly in section, illustrating the. sinker wheel and pressers and the mechanism for operating the stop mechanism, a portion of the lower cylinder being shown in connection therewith and broken away, the sinker wheel being shown in its position with the sinkers advanced between the needles of the lower cylinder. Fig. 5 is a plan view of the sinker wheel, the presser' for the primary needles, and a ortion of the stop mechanism, the sinker w reel being shown together with the lower cylinder and thrown out of operative relation to the needles of said lower cylinder, said lower cylinder being partly broken away, and in section, the lower bed plate shown 1n .section Fig. is a sectional elevation taken on line D--l`), Fig. 2, illustrating the rotary presser for the secondary set of needles, and the cam which actuales the primary set of needles, in connection with a portion of the primary and secondary cylinders and their needles, together with the two series of levers by means of which Said presser is thrown out of engagement with said secondary needles and said needle cam is raised or lowered to change the throw of the primary needles. Fig. 7 is a detail front elevation, viewed in the direction of the arrow a, Fig. 2, illustrating the mechanism by means of which the cam for throwing down the secondary set of needles is actuated. Fig. 8 is a sectional elevation taken on line F-F, Fig. Q. Fig. 9 is a detail front elevation of a development of a portion of the primary and secondary cylinders, illustrating the needle cams and the relative location thereto of the sinker wheel, the stationary presser for the primary set of needles, the rotary presser vfor the secondary set of needles, the tripper for the stop mechanism and the push hach. Fig. 1() is a rear elevation of the pattern wheel and mechanism connected therewith, together with a portion of the supporting ring` in which the secondary cylinder rotates. Fig. 11 is a side elevation of the pattern wheel and mechanism connected therewith, one of the side standards of the machine heilig shown broken away in both Figs. 10 and 11. Fig. 12 is a side elevation, similar to Fig. 11, showing the pattern wheel broken'away and connectingr mechanism in different positions relatively thereto. Fig. 13 iin sile elevation of the pattern wheel broken away and connecting mechanism in still another position relatively thereto. Fig. 14 isa detail view of the shipping pins and their stand, together with the cam for actuating the lever by means of which the pattern wheel is rotated, said lever being broken. away to save space. Fig. 15 is a detail. section partly in elevation taken on line (jl-G, Fig. 14. Fig. 16 is a plan view of one of the pairs of levers by means of which the mechanism for actuating the cams is actuated. Fig. 17 is a sectional elevation taken on line H Il, Fig. 16. Fig. 1S is a. rear elevation of one of the cams for actuating the secondary set of needles. Fig. 19 is a plan view, in detail of the sinker wheel, cam plate, and slur cock, showing the same with a portion of the sinkers engaging or bein advanced between the needles of the primary cylinder, said needles being shown in connection with a portion of said primary cylinder, which is broken away to saw-space in the drawings. Fig. 2() is a plan view of the sinker wheel and cam plate, with the 5 J-J, Fig. 3. Fig. 23 is a plan view of two pairs of levers and the shipping pins by means of which they are actuated, together with the lever which operates the slur cock upon the Sinkel' wheel. these parts being shown in connection with a portion of the secondary cylinder and its supporting ring. Fig. :24 is a side elevation as viewed from the right of -Fig. 1 of the switch plates, the stand upon which they are pivotally supported. and the levers by which they are rocked. Fig. 25 is a sectional elevation taken on line K-K. Fig. 2. Fig. 26 is a front elevation of the parts shown in Fig. 25. Fig. 27 is a rear elevation of an adjust- 20 able cani in its normal position for making the regular work. Fig. 28 is a rear elevation of the cani illustrated in Fig. 27, after the cani is raised as the saine is changed after making the stitch of the regular work.

2.5 Like numerals refer to like parts through- `out the several views of the drawings.

In the drawings. 30 is the frame, consisting of side standards 3l and 32 suitably connected together by a cross-head 33. The

30 main driving shaft 3l is journaled to rotate in bearings 85. fast to said cross-head 33 and is rotated by means of a fast pulley 37,

. a loose pulley 3G also being provided and adapted to rotate upon the main shaft 34 35 adjacent to the pulley 36. The lower cylinder 38 is fast to a running ring 39 rotatably supported upon the bed-plate 40. A gear 41 is fastened to the running ring` 3S and is driven by a pinion 42 fast t0 a vertical sha ft.

45?. journaled to rotate in bearings 44 and 45 and rotated by means of a bevel gear 46 fast to the lower end thereof and meshing into a bevel gear 47 fast to the main driving shaft 34. The upper cylinder 48 is fastened to a gear 49 which. in turn,- is fastened to a running ring 50, said running ring being constructed to rotate in the upper bed-plate 51. The upper bed-plate 51 is adjustahly fastened to brackets 52. 52 which, in turn.

are adjnstably supported upon and fastened to the side sterdards 31 and 32. The upper vlcylinder is rotatedby means of the gear 49 which meshes into a pinion 53 fast to the vertical shaft 43.

.55 The lower cylinder 38 is provided with grooves 54 in which are needle jacks 55 with spring needles 56 connected or fastened thereto. The upper cylinder 48 is provided with grooves 57 and in said grooves are 60 located jacks 58 to which are attached needles 59. The yarn is fed first to the needles of the lower cylinder, and, therefore. said needles and the cylinder upon which they are adapted to slide will be hereinafter referred to as the primary needles and cylinder. while the upper cylinder and the needles supported thereon will he referred to as the "secondary i cylinder and needles, for the reason that the loops of yarn are fed to the needles of the upper cylinder by the needles of the lower cylinder. .A reciprocatory motion is imparted to the primary needles by needle cams fast to brackets Gl which. in turn. are fastened to the bed-plate 40. A reciprocatory mot-ion is imparted to the secondary needles by needle cams 6:2 fast to brackets 53 which brackets are fastened to the upper bed-plate :31. The rotation of the cylinders and the operation of the primary and secondary spring needles therein is well known to those skilled in the art and results from the rotation of the cylinders relatively to the stathese grooves are located sinkers 67, each of said sinkers being provided with a lug 68 which projects into a groove G9 formed in the under face of the cam plate 70. The cani plate 70 has a hub 71 projecting upwardly therefrom which has a flush Setscrew 72 in screw-threaded engagement therewith adapted to hear against the shaft or stud 73. which is rigidly clamped atits lower end to a rocker-frame 74 by means of a nut 75. The stud 73 is provided with a flange 76 which hears against the upper face of the rocker frame 74. and that portion of the stud between the flange 76 and the nutl 75 projects through a slot 77 in the rocker frame 74 and is flattened olf at 78 to prevent the rotation of said stud relatively to said rocker frame.

The rocker frame 74 has a cylindrical stem T9 rigidly fastened thereto which projects into a hearing or hole formed in a base 80. said base being adjustably fastened to the lower bed-plate 40 by screws 81 which project through slots 82 provided in said hase (Fig. 22'). The rocker frame 74. together with the stein 79 and the sinker wheel and cam supported upon said rocker frame, may be adjusted longitudinally of the needles of the lower cylinder by means of adjusting screws S3, S3 which have screwthreaded engagement with said rocker frame and bear at their lower ends against the base 80. so that by screwing toward the right upon said screws 83 the rocker frame and parts supported thereon may be moved unwardly parallel to the primary needles n. A plate 84 is fastened to the hase 80 and is bentat its upper end to project over the top of the rocker frame i4 and thus prevent the same from moving upwardly after the same has been adjusted bv means of the adjusting screws 83. Said plate S4 is fastened by a screw 85 to the base 80, the screw 85 "cam plate 70.

:guided by two screws 96, 96 which project projecting through a slot rovided in the plate 84 and having screw-t readed engagement with said base.

It will be understood that the cam plate 70 is fastened to the stud 73 by a set-screw 7 2, and said camis further securely fastened to said stud, in order to prevent rotation thereon, by a collar 86 which is fastened to the stud 73 by set-screws 87, 87 19) and is locked to the cam plate 70 by a pin S8 which is fast to the collar 86 and projects downwsrdly therefrom into the hub 71 of said cam 70.

The slur cock 89, by means of whicl the sinkers are moved inwardly and outwardly between the primary needles 56, consists, as a whole, of a cam block 90 and a slide plate 91 fast to said cam block and extending across the upper face of the sinker cam 70. Said cam blo-:k 90 is preferably made in three parts screwed together and having a. cam groove or space 92 therebetween which forms a continuation of the groove 69 formed in the under face of the cam 70. This construction enables the parts of the slur cock which have become worn to be removed and replaced bv new parts. I1`he slide plate 91 is suitably guided upon the cam 70 by a screw 94 which projects through aslot 95 provided in the slide plate 91 and has screw-threaded engagement with the Said slide plate is further through slots 97, 97 provided in the cam block 90, said screws having screw-threaded engagement with the cam plate 70. The front end of the slide plate 91 is bent downwardly at 98 and is forked to straddle a screw 99 which, in function, is both a stop screw and an adjusting screw, for the slur cock 89.

A flat. spring 100 is fastened at one end tothe cam plate 70, the free end of said spring bearing againstthe inner face of the f downwardly extending end 98 of the slide plate 91, so that said slide plate 91 and the slur cock as a whole, including said cani plate and the cam block 90 fast thereto, are held against the stop-screw 99, and if it is desired to adjust. said slur cock, so that its position farthest removed from the primary needles shall be diminished or increased, the stop-screw 99 is rotated toward the right or toward the left, respectively. After such adjustment has been performed, the screw 99 Ls-held in position against accidental displacement by means of a set screw 101.V The cam block 90 and slide plate 91, forming as a whole the slur cock 89, are further guided. on being,r adjusted as hcreinbefore described, by the slot or 'opening 10.l which is formed in the cani plate '70 and extends therethrough (see Fig. the cam block 90 projecting do\\'nwardly into said opening and fitting therein. The slide plate 91 has an opening or slot 103 therein which surrounds the hub 71 of the cam plate 70 and thus enables said slide plate, with the cam block attached thereto, to be moved across the upper face of the cam plate 70 by rotating the adjusting screw 99 as bereinbefore described.

The yarn 104 is guided to the sinkers 67 by yarn guides 105 and 106, the yarn guide 105 being fastened to the cam bracket 63, while the yarn guide 106 is fastened to the upper bed-plate 51. A gear 107 meshes into the primary needles 56 and projmts into an annular 'groove 108 provided in the periphery of the primary cylinder 38. Said gear is fastened to a hub 109 projecting downwardly from the sinker wheel by means of a set-screw 110. The hub 109 of the sinker wheel 65 has a bracket or arm 111 (Fig. 21) fast thereto and forming, in effect, a portion thereof, into which is screwed an adjusting screw 112, which r0- tatably engages a swivel bearing 113. he swivel bearing 113 consists of a screw 114 which engages the hub of the gear 107, the upper end of said screw being forked to receive the shank of the screw 112 between the head thereof and a flange formed thereon.

An index linger 115 is pivoted upon a pin 116 fast to a bracket'plate 117. The bracket plate 117 is adjustably fastened by means of set-screws 118, 11S to the upper face of the cam plate 70. The screws 118 project through slots 119, 119 provided in said bracket plate, and the outer end of the index finger 115 moves over the upper face of the cam plate adjacent to graduations 120, 120 provided in the upper face of said cam plate. The rear end of said index finger 115 is slotted to straddle a pin 121 fast to the slide plate 91 which constitutes a portion of the slur cock 89.

In order to render the device capable of having the sinkers readily removed from the sinlrer wheel, a segment 122 of the cam plate 70 is made removable from the main portion of said cam and is secured thereto by screws 193, so that if desired said segment may be taken out by removing the screws 123 and thc sinkers removed from the sinker wheel to be repaired or replaced.

The rocker frame 7-1 is rotatable upon the hase S0 and carries with it the sinker wheel, sinker cam and other parts supported thereon, thus removing,r the sinkers from opera.- tive engagement with the primary needles whenever the sinker wheel, for any reason, is prevented from rotating freely upon the stud 73, the different reasons which might occur to prevent said sinker wheel from rotating havin been hereinbefore set forth. In order to hold the sinker neel with its sinkers normally in operative relation to the primary needles an arm 124 is fastened to the rocker frame 74. The free end of said arm 124 projects downwardly (see Figs. 3 and 4) and engages the free end of a flat spring 125, which is fastened by screws 126, 126 to the lowt bed-plate 40. The position of the free end f said spring 125 is regulated by a set-screw 127 having screw-threaded engagement-with said spring 125 and bearing at its inner end against the lower bed-plate 40.

The free end of the spring 125 is bent at an angle to the main body thereof at 12S and is also curved at 129 intermediate said angle portion and said body portion, so that said curved portion, at the base thereof, adjacent to said body portion bears againstone side of the arm 124 when the parts are in the position illustrated in Figs. 3 and 4, and thus holds the rocker frame in engagement with a screw 130 (Fig. 22) having -screw-threaded engagement with a bracket the rocker frame 74 become as one piece,

and the, teeth of the gear meshing into the needles of the primary cylinder are moved by said needles and the movement of their primary cylinder as though a portion o the rocker frame 74, so that the rocker frame 74, together with the sinker wheel and cam thereon, rotates about its axis, viz., the axis of'thecylinder stem 79, thus roeking the arm 124 from the position illustrated in Fig. 4 to that illustrated in Fig. 5, wherein it willbeseenthat the sinker wheel and the sinkers are moved out of engagement with the primary needles and the arm 124 is moved so that the inner corner there of bears against the outer face of the angle portion 128 of the spring 125. Thus the spring 125 hears against the opposite side of the arm to that against which it bore when the sinker wheel was in the osition illustrated in Fig. 4. The flat' spring 125,

therefore, acts to hold the sinker wheel in position with the sinkers in operative relation, to move in and out betweenA the primary needles and feed the yarn thereto, when the parts are in the position illustrated in Fig. 4, and when the parts are in the position illustrated in Fig. 5 said spring holds said sinker wheel with the sinkers out of engagement with or working operative relation to the primary needles. Said spring also performs the further function oi assisting the movement of the sinker wheel from the position illustrated in 4 to that illustrated in Fig. 5, when the arm 124 passes over the curved portion 129 'rocker frame is thrown out, together with the sinker wheel and its sinkers, as hereinbefore described, said spring acts to hold said rocker frame and sinker wheel and sinkers away from the needles, and that said rocker frame, sinker wheel and sinkers would in the absence of the spring be moved out, of operative relation to the needles without any obstruction occurring to prevent the sinker wheel from rotating, by the rotation of the needle carrier, with its needles meshing into the gear 107, without any aid from the spring. i

lVhen the sinker wheel is thrown ont, as hereinbefore described, it is very desirable that the loops should remain upon the primary needles, thus saving the labor of putting the cloth back on the primary needles, and this is accomplished by removing the presser for the primary needles from engagement therewith simultaneously with the outward movement of the sinker wheel. The presser 132 for the primary needles is a stationary presser, that is, as distinguished from a rotary presser, and is preferably formed of a cylindrical rod 133, bent at its inner end at the proper angle to engage the beards of the primary needles as they descend and press them to cast oil' the old. loops. Said rod is arranged to slide in a. bracket 134; which is provided with a dmvnwardly projecting stem 135. adjustably supported upon and fastened to a base 136, which is adjustably fastened to the lower hed-plate 40. The rod 133 slides in ears 137 and 138 which project upwardly upon the bracket 134 and has fastened thereto an arm 139 through which projects a rod 140 encircled by a spiral spring 141, one end of whichlears against said arm 139, the other end of' which hears against the adjusting nut 142, the action of said spring being to hold the bent forward end of the presser rod against the primary needles. An angle plate 143 is fastened to the upper end of the ear 137 and upon said an le plate is pivoted at 144 a lever 145. e inner end of the lever 145 hears against the hub 71 of the cam 70. The outer end of said lever is suitably curved and bears against the arm 139 (see Figs. 3 and 4), so that when the rocker frame 74 is rocked to move the lla sinker wheel and its cam from the position is adapted to abut against the bracket 193.

5 said stop-screw being normally held in enillustrated in Fig. 4 to that illustrated in Fig. 5, the lever 145 isrocked upon its pivot thus moving he arm 139 outwardly, togcther with the presser rod 133 which is fastened thereto, so that as soon as the sinker wheel commences its outwardly swinging movement, together wlth its rocker frame 74, it will be seen that the presser 132 will be removed from engagement with the priy mary needles and, therefore, the loops will not be pressed ott' of said needles.

It is desirable that in case of the sinkers or needles becoming jammed or the yarn bunching up the machine should be stopped automatically and this may be done by operating a stop motion by means of the sinker wheel as it is moving away from the needle cylinder, such a construction being made the subject-matter, by applicant. of a co-pending application for Letters Patent Ser. No. 408.515, filed December 30, 1907.

ln a machine known as a rib top machine. which has for its ob]ect to produce a welt, servinf.y as a finish for the ends of cuffs and the like, it is desirable to automatically change the needle cams, the pressers. and the sinker wheel in order to knit automatically upon the machine the rib fabric, a plain fabric for the welt. a royal rib and a loose course. To accomplish these ends. different series of levers are employed on the machine which change the needle cams. the distance to which the sinkers are advanced between the needles of the primary set,`and which more the presser for the secondary set of needles into and out of operation therewith. The different series of levers are operated to secure these ends by means of two pattern wheels, and these pattern wheels. together with the mechanism actuated thereby. and the different series of levers for actuating the needle cams. slur cock for the sinker wheel, and rotary presser for the secondary needles I will now proceed to describe.

Referring to Figs. 1, 2, 3 and Figs. 10 to 18. inclusive. it will be seen that the running:` ring 50. to which the secondary cylinder 48 and the gear 49 are fastened, has a stand 188 fastened thereto which has arranged to slide therein a series of movable shipping pins which are adapted to come in contact with and operate on said series of levers hereinbefore referred to. A cam 189 is fastened to the inside of said stand and revolves with the secondary cylinder. At each revolution of the secondary cylinder 48, the cam 189 comes in contact with a friction roll 190 rotatably mounted upon an arm 191 which is fastened to a rock-shaft 192 journnlcd to rock in hearings formed in a bracket 193 which is fastened to the side frame standard 39.. An ni'm 194 fast to the shaft 192 is provided with a stop-screw 195, which i l l sagement with said bracket by a spiral spring 196. An arm 197 is fastened to the outer end of the rock-shaft '192 and on the lower end thereof two pawls 198 and 199 are pivotally mounted. The pa'wl 198 engages a ratchet 900 which is rigidly fastened to a pattern wheel 201 journaled to rotate upon a stud 202 fast to the side frame 32. At each rotation of the needle cylinders the cam 189 rocks the arm 191, together with the rock-shaft 192 and also the arm 19T, 'thus moving the. pawl 198 a suthcient distance to rotate the ratchet 200 one tooth. The pattern wheel 201 has sprocket teeth 203 formed upon its periphery which mesh into a pattern chain Q04, said pattern chain being pro vided at intervals with a tooth 205. A second ratchet 206 is journaled upon the stud Q02 and this ratchet is rotated by the pawl 199. A second pattern 'wheel Q07 is fastened to the ratchet Q06 and has iu its periphery four .series of screw-'hreaded holes 208, Q09, Q10 and 211. These holes extend entirely around the periphery of the pattern wheel Q07 and one is provided in alinement with the bottom of cach of the ratchet teeth upon the ratchet 20G. Pins 9.12. 213, 214 and 9.15 are provided for each of said holes 208, 209, Q10 and 211. respectively, and are inserted in said holes, as may be desired, to form the different stitches for the fabric to be knit upon the machine. `An arm 216 is fastened to the outer end of a rock-shaft Q17, said arm .216 beingr in alinement with the pattern chain Q01. The rock-shaft Q17 is journaled to rock in a bracket 218 fast to the side. frame standard 3'2 and has fastened to its inner end another arm 219, to the upper end of which is pivotally attached an arm 290. The arm 290- is bent at its free. end to form an inclined or angular extension 221. Said arm 220 is in alinenicnt with the screw-holes 208 and pins S212 upon the pattern wheel 207 and extends beneath a piu 222 fast to and extending inwardly from the pawl 199. It will be understood that the pawl 198 is always in engagement with the ratchet. 200,

so that said ratchet 200 is rotated one tooth,

together with the pattern chain 204. ateach rotation of the needle cylinders. and so long as the pawl 199 is in engagement with its ratchet 206, said ratchet Q06. together with the second pattern wheel 207. will he rotated. If, now, it is desired to stop the rotation of the pattern wheel 207 in order that several courses of a' certain kind of stitch may be knit in the fabric. the pawl 199 is thrown out of engagement with its ratchet 206 and this is accomplished by one of the pins 212 in the pattern wheel 207` which, as said pattern wheel is rotated toward the right. (Fig. 19.) passes beneath the free cud of the arm 220 und lifts the same to the position illus- 

